Three people were arrested Tuesday as opponents and supporters of Richard Spencer clashed at Alabama’s Auburn University over the alt-right leader’s visit to the campus, despite the school’s attempt to cancel the event.

The three men were arrested on charges of disorderly conduct outside the event Tuesday night, according to arrest reports. Auburn police spokesperson Capt. Lorenza Dorsey said none of those arrested were Auburn students, and he said it’s not clear whether they were protesters or supporters of Spencer.

At the University of California at Berkeley, violent riots broke out in February and forced the cancellation of an event where right-wing pundit Milo Yiannopoulos was scheduled to speak, while Conservative writer Charles Murray was shouted down and physically confronted by protesters at Middlebury College in Vermont last month.

Correction: The original version of this story incorrectly characterized the three people arrested as protesters. Authorities have not confirmed whether those arrested were supporting or opposing Richard Spencer.